[Bug fortran/12456] please recognize Fortran STRING(K:K) as single character

[fengwang at gcc dot gnu dot org]

------- Comment #12 from fengwang at gcc dot gnu dot org  2006-01-09 02:27 -------
Subject: Bug 12456

Author: fengwang
Date: Mon Jan  9 02:27:45 2006
New Revision: 109489

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109489
Log:
fortran ChangeLog entry:
2006-01-09  Feng Wang  <fengwang@nudt.edu.cn>

        PR fortran/12456
        * trans-expr.c (gfc_to_single_character): New function that converts
        string to single character if its length is 1.
        (gfc_build_compare_string):New function that compare string and handle
        single character specially.
        (gfc_conv_expr_op): Use gfc_build_compare_string.
        (gfc_trans_string_copy): Use gfc_to_single_character.
        * trans-intrinsic.c (gfc_conv_intrinsic_strcmp): Use
        gfc_build_compare_string.
        * trans.h (gfc_build_compare_string): Add prototype.

testsuite ChangeLog entry:
2006-01-09  Feng Wang  <fengwang@nudt.edu.cn>

        PR fortran/12456
        * gfortran.dg/single_char_string.f90: New test.


Added:
    trunk/gcc/testsuite/gfortran.dg/single_char_string.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/trans-expr.c
    trunk/gcc/fortran/trans-intrinsic.c
    trunk/gcc/fortran/trans.h
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12456